Personally I think racial minorities in America have an easier time seeing the contours of the class divide in America, because we have a more realistic view of white people as a whole, than white people have of racial minorities as a whole. /
A lot of working class whites who aren't actively racist, tend to de-racinate POC and think there should be no difference between us and them. Upper class white liberals tend to over-ethnicize POC esp the sorts they don't tend to socialize with e.g. poor people and immigrants.
Racial minorities don't do either of these things when it comes to white people. Generally I'd say we don't think of white as an ethnicity, just an objective racial trait, and despite a lot of cringe POC 'culture' saying otherwise, we see white people fairly straightforwardly.
Since we don't see white people as a mono-ethnic group, we can much more easily see the differences in class attitudes without the confusion of thinking white people all owe each other something. This is the thing a lot of whites have trouble seeing when it comes to POC.